Change Remote Machine Settings
How to Change Remote Blocking Settings
Log in to HomeGuard viewer and go to the "Remote Machines" section. Make sure server is started and select the computer(s) for which you want to change the settings then click the "Change Monitoring Settings" toolbar button as shown below.

If multiple computers are selected, settings of the first selected computer will be opened and after making any modifications you want these settings will be applied to all selected computers.